Is Na2O a Bronsted Base

Clearly, water soluble metal oxides are Arrhenius bases. And hence Na2O is Arrhenius base.

Is NaOH Arrhenius and Bronsted-Lowry base?

Solution: The Brønsted-Lowry definition says that a base accepts protons (H+ ions). NaOH, Ca(OH)2, and KOH are all Arrhenius bases because they yield the hydroxide ion (OH-) when they ionize. However, NH3 does not dissociate in water like the others.

What type of base is sodium hydroxide?

A strong base is something like sodium hydroxide or potassium hydroxide which is fully ionic. You can think of the compound as being 100% split up into metal ions and hydroxide ions in solution. Each mole of sodium hydroxide dissolves to give a mole of hydroxide ions in solution.